Below is a guest post by Android developer Nicholas Grimlach AKA PlusMinus

Android finally has a fully audible realtime turn-by-turn Navigation System – called AndNav2.

Its just a public Alpha, but due to the experience gained with AndNav1 on the Android Market it is already in a pretty mature state.

Moreover AndNav2 is free. No monthly costs, no map-pack-upgrades, never! To keep it free the project is contigent on voluntary donations throughout the community – and advertising right inside AndNav2.